#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

void test(void);
void test2(void);

int main(void) {
    printf("main before\n");
    int a = 10;
    test();
    printf("mian after\n");
    return 0;
}

void test(void) {
    printf("test before\n");
    int a = 20;
    test2();
    printf("test after\n");
}

void test2(void) {
    printf("test2 before\n");
    int a = 30;
    printf("test2 after\n");
}